The Viair 330 (I think) is on my short list for when my MV50 goes belly up. I have a feeling though that Im gonna be stuck with it for a long while. I use it less these days, and its still strong as ever. The damn thing actually fills faster as it goes. No idea why but the last tire always...
+2 on the Masterflow 1050 for the $$. I've had mine for going on 7 years now. The first 4 saw fairly heavy use. 3 - 4 trips a week in spring/summer/fall.
My air up times are a bit shorter - 18 to 36 a 35" 305/16 in about 4 minutes.
Just put a quick connect on the hose or get another hose...